Plug for a drain



FIG. 1 is a perspective view of a plug for a drain showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 6.

The dashed broken lines depict portions of the plug for a drain that form no part of the claim. 

CLAIM The ornamental design for a plug for a drain, as shown and described. 